Field Notes / Σ /sym/3cad98
id=1 · host=formula-vault.cloud · 2026-10-19 00:14Z
4y² + 8y + 1 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
468K
2H₂ + O₂ → 2H₂O
\oint_C \vec{F}\cdot d\vec{r} = 0
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\frac{10}{7} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
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\frac{7}{7} \sum_{i=1}^{n} i^{2}
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det| 6 3 ; 4 7 | = 30
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det| 7 3 ; 6 8 | = 38
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\frac{11}{4} \sum_{i=1}^{n} i^{2}
399K
∑_{k=1}^{n} k = n(n+1)/2
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det| 2 7 ; 2 3 | = -8
387K
\frac{10}{5} \sum_{i=1}^{n} i^{2}
144K
det| 12 4 ; 3 13 | = 144
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\lim_{α\to 0} \frac{\sin α}{α} = 1
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det| 1 1 ; 2 2 | = 0
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det| 4 3 ; 0 5 | = 20
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det| 7 4 ; 4 8 | = 40
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